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KR20100111495A - An earthquake-proof apparatus of a fuel rack - Google Patents

An earthquake-proof apparatus of a fuel rack Download PDF

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Publication number
KR20100111495A
KR20100111495A KR1020090029952A KR20090029952A KR20100111495A KR 20100111495 A KR20100111495 A KR 20100111495A KR 1020090029952 A KR1020090029952 A KR 1020090029952A KR 20090029952 A KR20090029952 A KR 20090029952A KR 20100111495 A KR20100111495 A KR 20100111495A
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South Korea
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fixing plate
plate
nuclear fuel
horizontal fixing
earthquake
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KR1020090029952A
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KR101080936B1 (en
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유억형
손희동
김경련
황영준
김인용
황정기
김민규
고광적
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두산중공업 주식회사
한국전력기술 주식회사
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    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C19/00—Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor, e.g. within its pressure vessel
    • G21C19/02—Details of handling arrangements
    • G21C19/06—Magazines for holding fuel elements or control elements
    • G21C19/07—Storage racks; Storage pools
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Stackable Containers (AREA)

Abstract

본 발명은 지진 등의 외부에서 가해지는 충격에 의한 변형 및 손상이 최소화되도록 한 핵연료 저장대의 내진장치에 관한 것으로서, 베이스플레이트의 상면에 직사각형 단면을 갖고 상면이 개방된 다수의 캔이 격자 형상을 이루며 일체로 결합된 핵연료 저장대에 있어서, 상기 캔의 상면에 가로 방향으로 고정되고 평행하게 다수개가 이격 배치된 가로고정판;과 상기 가로고정판과 직각을 이루며 결합되고, 평행하게 다수개가 이격 배치된 세로고정판;을 포함하여 구성된다.The present invention relates to an earthquake resistant device of a nuclear fuel reservoir to minimize deformation and damage caused by an external impact such as an earthquake, and has a rectangular cross section on an upper surface of a base plate and forms a plurality of cans with an open upper surface. In the nuclear fuel storage unit coupled integrally, a horizontal fixing plate which is fixed to the upper surface of the can in a horizontal direction and arranged in parallel to the plurality; horizontally fixed plate coupled to the horizontal fixing plate at a right angle, a plurality of parallel vertically spaced plate It is configured to include.

이에 따라, 제작 및 설치가 간편하면서도 지진 등의 충격에 의한 핵연료 저장대의 손상을 방지하는 효과를 가지게 된다.Accordingly, it is easy to manufacture and install, but has an effect of preventing damage to the nuclear fuel reservoir caused by the impact of an earthquake.

Description

핵연료 저장대의 내진장치{an earthquake-proof apparatus of a fuel rack}Earthquake-proof apparatus of a fuel rack

본 발명은 사용후 핵연료집합체를 저장하는 핵연료 저장대에 관한 것으로서, 더욱 상세하게는 지진 등의 외부에서 가해지는 충격에 의한 변형 및 손상이 최소화되도록 한 핵연료 저장대의 내진장치에 관한 것이다.The present invention relates to a nuclear fuel reservoir for storing spent fuel assemblies, and more particularly, to a seismic device of a nuclear fuel reservoir for minimizing deformation and damage caused by an external impact such as an earthquake.

일반적으로, 원자력 발전소에서 사용되는 핵연료봉은 내측에 공간부가 형성된 원통형의 봉재의 내부에 우라늄 필렛을 충진하여 전체적으로 봉 형상을 갖도록 하고 있으며, 이러한 핵연료봉이 다수개가 모여 핵연료집합체를 형성한다.In general, a nuclear fuel rod used in a nuclear power plant is filled with uranium fillet inside a cylindrical rod formed with a space therein to have a rod shape as a whole, and a plurality of such fuel rods form a fuel assembly.

핵연료집합체는 사용 전,후에 그 형태의 특성에 따라 별도의 저장대를 이용하여 안전하게 저장되도록 하고 있는데, 통상적으로 핵연료집합체를 보관하는 핵연료 저장대는 도 3에서 도시된 바와 같이 평판 형상의 베이스플레이트(10)의 하면에 베이스플레이트(10)가 지면과 이격된 상태로 고정되도록 하는 다수의 서포트(20)를 고정한다.The fuel assembly is to be safely stored by using a separate storage stand according to the characteristics of the form before and after use, a fuel reservoir for storing the fuel assembly is typically a flat plate-shaped base plate (10) A plurality of supports 20 are fixed to the bottom surface of the base plate 10 so that the base plate 10 is spaced apart from the ground.

또한, 상기 베이스플레이트(10)의 상면에는 내측에 공간이 형성되어 상술한 사용 후 핵연료집합체를 저장하도록 정사각형 단면을 갖고 상면이 개방된 다수의 캔(30)이 결합되도록 하되, 상기 캔(30)은 다수개가 격자 형상으로 결합되도록 하 여 각각의 캔(30)의 내측으로 각각의 사용 후 핵연료집합체가 삽입되면서 하나의 핵연료 저장대에 다수의 사용 후 핵연료집합체를 동시에 보관할 수 있도록 하며, 캔(30)의 외측면에는 핵반응을 저지하는 보랄플레이트(31) 및 보랄플레이트를 감싸는 커버플레이트(32)가 결합된다.In addition, a space is formed on an upper surface of the base plate 10 so that a plurality of cans 30 having a square cross section and an open upper surface are coupled to store the spent fuel assembly described above, and the can 30. By allowing a plurality of the combined fuel assembly to be inserted into the inside of each can 30 so that the plurality of lattice shapes can be stored at the same time in a single fuel storage, the spent fuel assembly can be stored simultaneously, The outer surface of the) is coupled to the boral plate 31 and the cover plate 32 surrounding the boral plate to prevent nuclear reaction.

하지만, 상기와 같은 종래의 사용 후 핵연료집합체는 캔의 상면이 개방된 통 형상으로 형성됨에 따라 캔의 측면에서 직접 충격이 가해질 경우에는 캔이 변형되거나 파손될 위험성이 있었다.However, the conventional spent fuel assembly as described above has a risk that the can is deformed or broken when a direct impact is applied from the side of the can as the upper surface of the can is formed into an open cylindrical shape.

이에, 본 발명은 상기와 같은 종래의 제반 문제점을 해소하기 위하여 안출된 것으로, 그 목적은 간단한 구성으로 기존의 핵연료 저장대의 내진 강도가 극대화되도록 한 핵연료 저장대의 내진장치를 제공함에 있다.Accordingly, the present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to provide a seismic device of the nuclear fuel reservoir to maximize the seismic strength of the existing nuclear fuel reservoir with a simple configuration.

또한, 본 발명의 목적은 가로고정판과 세로고정판이 서로 견고하게 맞물리게 고정하여 기계적 구조물인 핵연료 저장대의 건전성을 향상시키도록 함에 있다.In addition, it is an object of the present invention to improve the integrity of the nuclear fuel reservoir of the mechanical structure by fixing the horizontal fixing plate and the vertical fixing plate to be firmly engaged with each other.

상기와 같은 목적을 달성하기 위하여, 본 발명은 베이스플레이트의 상면에 직사각형 단면을 갖고 상면이 개방된 다수의 캔이 격자 형상을 이루며 일체로 결합된 핵연료 저장대에 있어서, 상기 캔의 상면에 가로 방향으로 고정되고 평행하게 다수개가 이격 배치된 가로고정판;과 상기 가로고정판과 직각을 이루며 결합되고, 평행하게 다수개가 이격 배치된 세로고정판;을 포함하여 구성된다.In order to achieve the above object, the present invention has a rectangular cross section on the upper surface of the base plate and a plurality of cans of which the upper surface is open to form a lattice shape and integrally coupled in the nuclear fuel reservoir, the horizontal direction on the upper surface of the can It is fixed to the horizontal fixed plate in parallel with a plurality of spaced apart; and the horizontal fixed plate is coupled to form a perpendicular to the horizontal fixed plate, a plurality of parallel parallel spaced vertically arranged; comprises a.

또한, 상기 가로고정판은 상면에 하방으로 함몰된 다수의 결합홈이 형성되고, 상기 세로고정판의 하면에 상기 결합홈에 삽입되도록 함몰된 다수의 걸림홈이 형성된 것을 특징으로 한다.In addition, the horizontal fixing plate is formed with a plurality of coupling grooves recessed downward on the upper surface, and a plurality of locking grooves recessed to be inserted into the coupling groove on the lower surface of the vertical fixing plate is formed.

또한, 상기 가로고정판 및 세로고정판은, 상기 캔의 상부측에 고정된 것을 특징으로 한다.In addition, the horizontal fixing plate and the vertical fixing plate, characterized in that fixed to the upper side of the can.

이에, 본 발명은 가로고정판과 세로고정판의 간단한 구성으로 기존의 핵연료 저장대의 내진 강도가 극대화되도록 한 핵연료 저장대의 내진장치를 제공함으로서, 제작 및 설치가 간편하면서도 지진 등의 충격에 의한 핵연료 저장대의 손상을 방지할 수 있는 효과를 가지게 된다.Accordingly, the present invention provides a seismic device of the nuclear fuel storage stand to maximize the seismic strength of the existing fuel storage stand by the simple configuration of the horizontal fixing plate and the vertical fixing plate, while making the installation and installation simple, damage to the nuclear fuel storage stand due to the impact of earthquakes and the like. It will have the effect of preventing.

또한, 본 발명은 결합홈 및 걸림홈을 형성하여 가로고정판과 세로고정판이 서로 견고하게 맞물림 고정되도록 함으로서, 별도의 고정수단을 이용하지 않고서도 가로고정판에 세로고정판이 견고하게 결합되면서 서로 어긋나거나 미끄러지는 것을 방지할 수 있게 될 뿐만 아니라, 가로고정판과 세로고정판의 지지력이 극대화되는 효과를 가지게 된다.In addition, the present invention by forming a coupling groove and the locking groove so that the horizontal fixing plate and the vertical fixing plate is firmly engaged with each other, the vertical fixing plate is firmly coupled to the horizontal fixing plate without using a separate fixing means to shift or slip each other In addition to being prevented, the supporting force of the horizontal fixing plate and the vertical fixing plate is maximized.

이하, 본 발명의 바람직한 실시예를 첨부된 도면을 참고로 하여 더욱 상세하게 설명하면 다음과 같다.Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명의 일 실시예를 보인 분해사시도이고, 도 2는 도 1의 결합상태를 보인 사시도로서, 도시된 것과 같이 본 발명은 원자력 발전소에서 사용되는 핵연료를 저장하는 핵연료 저장대에 관한 것으로서, 다수의 캔(30)이 격자를 이루며 결합된 셀모듈(40)의 상면에 가로고정판(41)과 세로고정판(42)을 구비하여 캔(30)의 외측방에서 충격 또는 하중이 가해질 때 캔(30)의 변형 및 손상이 방지되도록 지지하는 핵연료 저장대의 내진장치에 관한 것이다.1 is an exploded perspective view showing an embodiment of the present invention, Figure 2 is a perspective view showing a combined state of Figure 1, the present invention relates to a nuclear fuel storage table for storing the nuclear fuel used in the nuclear power plant as shown In addition, a plurality of cans 30 are provided with a horizontal fixing plate 41 and a vertical fixing plate 42 on the upper surface of the cell module 40 coupled to form a lattice and when the impact or load is applied from the outside of the can 30. The present invention relates to a seismic device of a nuclear fuel reservoir that supports deformation and damage of (30).

상기 핵연료 저장대는 하부측에 평판 형태의 베이스플레이트(10)가 구비되고, 상기 베이스플레이트(10)의 상면에 정사각형 단면을 갖고 내측에 사용 후 핵연료집합체를 저장할 수 있는 수용공간이 형성되며 상면이 개방된 다수의 캔(30)이 구비되며, 상기 캔(30)이 격자 형상을 이루며 일체로 결합되어 다수의 사용 후 핵연료집합체가 하나의 핵연료 저장대에 보관되도록 한다.The fuel reservoir is provided with a base plate 10 in the form of a plate on the lower side, has a square cross section on the upper surface of the base plate 10 is formed in the inner receiving space for storing the spent fuel assembly and the upper surface is open A plurality of cans 30 are provided, and the cans 30 form a lattice shape and are integrally coupled to each other so that a plurality of spent fuel assemblies are stored in a single fuel reservoir.

또한, 핵연료저장대는 도 2에서 도시된 것과 같이 베이스플레이트(10)의 하면에는 베이스플레이트(10)가 지면과 이격된 상태로 고정되도록 하는 다수의 서포트(20)를 고정한다.In addition, the nuclear fuel storage station is fixed to the plurality of supports 20 to be fixed to the base plate 10 is spaced apart from the ground on the lower surface of the base plate 10 as shown in FIG.

더불어, 상기 캔(30)의 외측면에는 핵반응을 저지하는 보랄플레이트(31) 및 보랄플레이트(31)를 감싸는 커버플레이트(32)를 부착하여 사용 후 핵연료집합체를 보관하는 과정에서 핵반응이 억제되도록 하는 것이 바람직하다.In addition, the outer surface of the can 30 is attached to the boral plate 31 to prevent nuclear reaction and the cover plate 32 surrounding the boral plate 31 to attach the nuclear reaction in the process of storing the nuclear fuel assembly after use It is preferable.

상기 가로고정판(41)은 캔(30)과 동일한 재질인 스테인레스 스틸 플레이트 등으로 형성되고, 셀모듈(40)의 폭과 대응되는 길이로 형성되도록 하여 상기 셀모듈(40)의 상면에 가로방향으로 배치되되, 일정 간격을 두고 평행하게 다수개가 이격 배치되도록 하며, 상기 셀모듈(40)의 상부측에 용접 등의 결합방법에 의해 고정되도록 한다.The horizontal fixing plate 41 is formed of a stainless steel plate or the like made of the same material as the can 30, and is formed in a length corresponding to the width of the cell module 40 in the horizontal direction on the upper surface of the cell module 40. Is arranged, but a plurality of parallel to be spaced apart at a predetermined interval, and fixed to the upper side of the cell module 40 by a coupling method such as welding.

상기 세로고정판(42)은 상기 가로고정판(41)과 직교되면서 다수개가 평행하게 이격 배치되도록 하여 가로고정판(41)과 세로고정판(42)이 전체적으로 격자를 이루면서 셀모듈(40)의 외측에서 가해지는 충격을 지지하도록 한다.The vertical fixing plate 42 is orthogonal to the horizontal fixing plate 41 so that a plurality of the horizontal fixing plates 41 are arranged in parallel to each other so that the horizontal fixing plate 41 and the vertical fixing plate 42 form a lattice as a whole and are applied from the outside of the cell module 40. Support the shock.

또한, 상기 세로고정판(42)은 조립이 용이하면서도 더욱 견고한 결속력을 갖도록 하기 위하여 상기 가로고정판(41)의 상면에 하방으로 함몰된 다수의 결합홈(411)을 형성하고, 상기 세로고정판(42)에 상기 결합홈(411)과 대응되게 상부측으로 함몰된 다수의 걸림홈(421)을 형성하여 상기 결합홈(411)과 걸림홈(421) 이 서로 맞물려지면서 가로고정판(41)과 세로고정판(42)이 일체로 결합되도록 하는 것이 바람직하다.In addition, the vertical fixing plate 42 forms a plurality of coupling grooves 411 recessed downward in the upper surface of the horizontal fixing plate 41 in order to have a more solid binding force and easy assembly, the vertical fixing plate 42 Forming a plurality of engaging grooves 421 recessed to the upper side to correspond to the coupling groove 411 in the engaging groove 411 and the engaging groove 421 are engaged with each other, the horizontal fixing plate 41 and the vertical fixing plate 42 ) Is preferably integrally coupled.

더불어, 상기 가로고정판(41)은 상기 다수의 캔(30)의 외벽에 용접으로 고정되도록 하고, 상기 세로고정판(42) 또한 상기 가로고정판(41)과 직교되게 하면서 결합되도록 하는 것이 바람직하다.In addition, the horizontal fixing plate 41 is preferably fixed to the outer wall of the plurality of cans 30 by welding, and the vertical fixing plate 42 is also coupled to orthogonal to the horizontal fixing plate 41.

도 1은 본 발명의 일 실시예를 보인 분해사시도.1 is an exploded perspective view showing an embodiment of the present invention.

도 2는 도 1의 결합상태를 보인 사시도.Figure 2 is a perspective view showing a coupled state of FIG.

도 3은 종래 핵연료 저장대의 일 예를 보인 사시도.Figure 3 is a perspective view showing an example of a conventional fuel reservoir.

※ 도면의 주요 부분에 대한 부호의 설명[Description of Drawings]

10 : 베이스플레이트10: base plate

20 : 서포트20: Support

30 : 캔30: can

31 : 보랄플레이트 32 : 커버플레이트   31: Boral plate 32: Cover plate

40 : 셀모듈40: cell module

41 : 가로고정판 411 : 결합홈   41: horizontal fixing plate 411: coupling groove

42 : 세로고정판 421 : 걸림홈   42: vertical fixed plate 421: locking groove

Claims (3)

베이스플레이트(10)의 상면에 직사각형 단면을 갖고 상면이 개방된 다수의 캔(30)이 격자 형상을 이루며 일체로 결합된 셀모듈(40)이 구비된 핵연료 저장대에 있어서,In the nuclear fuel storage table provided with a cell module 40 integrally coupled with a plurality of cans 30 having a rectangular cross section on the top surface of the base plate 10 and having an open top surface in a lattice shape, 상기 셀모듈(40)의 상부측에 가로 방향으로 고정되고 평행하게 다수개가 이격 배치된 가로고정판(41);과A horizontal fixing plate 41 fixed to the upper side of the cell module 40 in a horizontal direction and spaced apart from each other in parallel; 상기 가로고정판(41)과 직각을 이루며 결합되고, 평행하게 다수개가 이격 배치된 세로고정판(42);Vertically fixed plate 42 is coupled to form a right angle with the horizontal fixing plate 41, the plurality of parallel spaced apart; 을 포함하는 핵연료 저장대의 내진장치.Seismic device of the nuclear fuel storage including a. 제 1항에 있어서,The method of claim 1, 상기 가로고정판(41)은 상면에 하방으로 함몰된 다수의 결합홈(411)이 형성되고, 상기 세로고정판(42)의 하면에 상기 결합홈(411)에 삽입되도록 함몰된 다수의 걸림홈(421)이 형성된 것을 특징으로 하는 핵연료 저장대의 내진장치.The horizontal fixing plate 41 is formed with a plurality of coupling grooves 411 recessed downward on the upper surface, a plurality of locking grooves 421 recessed to be inserted into the coupling groove 411 on the lower surface of the vertical fixing plate 42. The seismic device of the nuclear fuel storage compartment, characterized in that formed. 제 1항 또는 제 2항에 있어서,The method according to claim 1 or 2, 상기 가로고정판(41) 및 세로고정판(42)은, 상기 캔(30)의 상부측에 고정된 것을 특징으로 하는 핵연료 저장대의 내진장치.The horizontal fixing plate 41 and the vertical fixing plate 42 is fixed to the upper side of the can 30, the seismic device of the nuclear fuel reservoir.
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Publication number Priority date Publication date Assignee Title
US11017908B2 (en) * 2012-08-28 2021-05-25 Holtec International System and method for minimizing movement of nuclear fuel racks during a seismic event
US11515054B2 (en) 2011-08-19 2022-11-29 Holtec International Method of retrofitting a spent nuclear fuel storage system

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KR101353964B1 (en) 2012-06-15 2014-01-23 한전원자력연료 주식회사 A Vibration Isolator for Nuclear Fuels subjected to External Dynamic Loads

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
US11515054B2 (en) 2011-08-19 2022-11-29 Holtec International Method of retrofitting a spent nuclear fuel storage system
US11017908B2 (en) * 2012-08-28 2021-05-25 Holtec International System and method for minimizing movement of nuclear fuel racks during a seismic event

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